PART 1 GARTH : PACIFIC OXYRHYNCHA 387 



4b. Lateral spine blunt and conical, carapace nearly smooth. 

 Rostrum, antennal spine, and preorbital spine short- 

 ened. Cheliped of adult male grossly proportioned, 



palm inflated, fingers gaping widely. Male first pleopod 



with customary swelling basal to apex. 



Gulf and Galapagos triangulatus 



Microphrys weddelli Milne Edwards 

 Plate W, Fig. 3 ; Plate 43, Fig. 1 



Microphrys weddelli Milne Edwards, 1851, p. 291, pi. 10, figs. 1, 2. 

 Rathbun, 1910, p. 574; 1925, p. 496, pi. 271, figs. 2-7. Garth, 1957, 

 p. 30. 

 Microphrys iveddellii, A. Milne Edwards, 1873b, pi. 14, figs. 1-lc; 1875, 

 p. 60. Miers, 1886, p. 83. Nobili, 1901, p. 30. 

 Type: Two males and two females, syntypes, in Paris Museum. Of 

 these the figured male, length 41 mm, width 40 mm, is hereby selected 

 as lectotype, at the request of Dr. Jacques Forest. 



Type locality: Coast of Peru; H. A. Weddell, collector. 



Localities subsequently reported, with collectors: Ecuador: Santa 

 Elena Bay, E. Festa (Nobili). Peru: Guerin collection, possibly cotypes; 

 Paraca Bay, Hassler (Rathbun, 1925). Chile: Caldera, Hassler (Rath- 

 bun, 1925). "West coast of South America," Moller (Rathbun, 1925). 

 Extralimital : Guadeloupe (A. Milne Edwards). 



Atlantic analogue: According to A. Milne Edwards, the species is 

 represented in the Atlantic. (See Remarks below) 



Diagnosis: Anterior branchial regions not greatly swollen. Two 

 long spines on branchial region near lateral angle. Hepatic region with 

 two short spines. Lateral lobes absent. A long spine on carpal segment 

 of each of first three legs. Basal antennal article with one spine. Male 

 first pleopod with keel encroaching upon tip, separated from it by a 

 minute notch. 



Description: Body and legs not very hairy; stiff, hooked hairs cover- 

 ing the rostrum, the projecting parts of the carapace, and the upper part 

 of the legs. Carapace pyriform, greatly broadened at the level of the 

 branchial regions. Regions of the carapace little swollen and bearing on 

 their prominences some feebly marked tubercles. On the postbranchial 

 lobes these tubercles more raised and becoming spiniform. A line of 

 pearl-like granulations extending parallel to the posterior margin to just 

 above the fourth pair of legs. 



